Sta-Wet Premier Palette - Ideal for projects that require maximum palette surface! No more wasted paint. . . Masterson's patented process keeps acrylics and other water-based paints moist on the open palette for hours. Once the lid is closed, the paints will stay in workable condition for days, even weeks. A wet sponge and special permeable palette paper provide the paint with a constant source of moisture. Paints will not dry out. The air-tight container can be used to store oil paints also. (Oil palette paper not included).